Surgical screw and method of performing ligament reconstruction using said screw

Abstract

This invention relates to a system and a method for affixing soft tissue to bones. The system for fixing soft tissue within a bone tunnel comprising a first fixation member having a proximal end and a distal end and a bore extending from said proximal end to said distal end, said first fixation member is adapted for insertion against a first portion of a soft tissue positioned within a bone tunnel, a second portion of said soft tissue emerging from said bone tunnel; a second fixation member adapted to engage said bore of said first fixation member, having means for restraining disengagement therewith and a proximal end; and a third fixation member adapted to engage said second portion of said soft tissue, having means for coupling onto said proximal end of said second fixation member and restraining disengagement therewith.

What is claimed is: 
     
         1 ) A method for affixing a piece of soft tissue within a bone tunnel comprising the steps of:
 a. positioning a piece of soft tissue inside the bone tunnel such that a portion thereof resides within the bone tunnel and a second portion of said soft tissue reside outside the bone tunnel;   b. positioning a first fixation member upon the piece of soft tissue within the bone tunnel;   c. coupling a third fixation member onto distal post portion of a second fixation member, wherein a proximal head portion of said second fixation ember prevents disengagement of the third fixation member from second fixation member;   d. pressing a third fixation member onto said second portion of said soft tissue against bone surface outside said bone tunnel; and   e. restraining disengagement between the first and the third fixation members by engaging a second fixation member with the first fixation member.   
     
     
         2 ) A system for fixing soft tissue within a bone tunnel comprising:
 a. a screw-type first fixation member having a proximal end and a distal end and a bore extending from said proximal end to said distal end, said first fixation member is adapted to compress a first portion of a soft tissue positioned within a bone tunnel against the inside surface of said bone tunnel, a second portion of said soft tissue emerging from said bone tunnel; and   b. a screw-type second fixation member with a solid distal post adapted to advance inside said bore of said first fixation member from the proximal end to distal end, having
 i. means for restraining disengagement therewith; and 
 ii. a proximal end with a screw driver socket; 
   wherein the distal post of said second fixation member is adapted to uniformly compress said second portion of said soft tissue against said bone when fully engaged with said first fixation member.